<template>
    <transition name="drop">
      <div class="top-tip" v-show="showFlag" @click.stop="hide">
        <slot></slot>
      </div>
    </transition>
</template>

<script>
    export default {
      props: {
        delay: {
          type: Number,
          default: 2000
        }
      },
       data () {
         return {
           showFlag: false
         }
       },
      methods: {
         show () {
           this.showFlag = true;
           clearTimeout(this.timer);
           this.timer =  setTimeout(() => {
             this.hide()
           },this.delay)
         },
        hide () {
           this.showFlag = false;
        }
      }
    }
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
  @import "~common/stylus/variable"

  .top-tip
    position: fixed
    top: 0
    width: 100%
    z-index: 500
    background: $color-dialog-background
    &.drop-enter-active, &.drop-leave-active
      transition: all 0.3s
    &.drop-enter, &.drop-leave-to
      transform: translate3d(0, -100%, 0)
</style>
